A Very Long Thin Wire Produces a Magnetic Field Of 0.0020

question 60

Multiple Choice

A very long thin wire produces a magnetic field of $0.0020 \times 10 ^ { - 4 } \mathrm {~T}$ at a distance of $1.0 \mathrm {~mm}$ from the wire. What is the magnitude of the current? $\left( \mu _ { 0 } = 4 \pi \times 10 ^ { - 7 } \mathrm {~T} \cdot \mathrm { m } / \mathrm { A } \right)$

• A) \(4000 \mathrm {~mA}\)
• B) \(2.0 \mathrm {~mA}\)
• C) \(3100 \mathrm {~mA}\)
• D) \(1.0 \mathrm {~mA}\)

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